SciPost Submission Page
Emergent Pair Density Wave Order Across a Lifshitz Transition
by Luhang Yang, Elbio Dagotto, Adrian E. Feiguin
Submission summary
| Authors (as registered SciPost users): | Luhang Yang |
| Submission information | |
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| Preprint Link: | https://arxiv.org/abs/2503.19761v2 (pdf) |
| Date submitted: | Nov. 19, 2025, 5:30 p.m. |
| Submitted by: | Luhang Yang |
| Submitted to: | SciPost Physics |
| Ontological classification | |
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| Academic field: | Physics |
| Specialties: |
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| Approach: | Computational |
Abstract
We numerically investigate the telltale signs of pair-density-wave order (PDW) in the Kondo-Heisenberg chain by focusing on the momentum resolved spectrum in different parameter regimes. Density matrix renormalization group calculations reveal that this phase is characterized by a dispersion with two minima and four Fermi points, indicating the emergence of an effective next-nearest-neighbor hopping that arises as a second-order effect to avoid magnetic frustration. The pairs appear in the spectrum as in-gap bound states with weight concentrated in the hole pockets. The low-energy physics can be understood by means of a generalized t-J model with next-nearest-neighbor hopping. Our results offer a guide for searching for experimental signatures, and for other models that can realize PDW physics.
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